Quote:Nothing. And on a fundamental level, nothing exists in a definable state outside of your mind. But that is explained by simple relativity and QM - values are subjective and therefore indeterminate before interaction/coupling.
Actually what proves that there exist reality outside the mind is that the mind can't exist without cause.. It's rather irrelevant of what states existence takes, or is capable of producing. And no, nothing can never exist as a definable state regardless if there exists a mind or not. Existence doesn't require observation to exist anymore than it would require a bouncing ball to exist. There simply would be existence without observation or appreciation.